This is the full gameplay of this Sam Fisher mission. I’ve also got a shorter edited version available.

Operation Watchman… We’re meeting up with Sam Fisher from Splinter Cell to take care of a mission in a Unidad base at night. This challenge was awesome for the sonar goggles alone, but has atmospheric music, a time component and is pretty difficult.

Infiltrate the Unidad base unseen and without killing anybody. Meet up with Sam Fisher before 04:00 and then help him escape.

I played this on Tier One extreme difficulty (at Tier 12) – see how I did it!